Any tech heads out there who no about fans ?

[f1bud]

CAN I PUSH AIR THROUGH COOLTUBE AND USE SMALLER FAN 2 PULL AS WELL AS IN AV A HOT SPOT/ NOT 2 MUCH DUCTING JUST ONE 180% TURN FROM MY Fan 365m3/hr AND I WAS WONDERING IF ITS OK TO USE A 137 m3/h airflow output FAN TO HELP GET RID OF THIS HOT SPOT ? OR WUD THIS DAMAGE EITHER FAN ? ANY TECH HEADS OUT THERE WHO NOWS HOW FANS WORK WITH EACH OTHER I WUD APPRECIATE ANY TIPS ON THIS MATTER. THANX NOOBY !

 

[jondamon]

If you are thinking about running 2 fans inline you should always start with the lower rating first.

Anything under a 90degree bend is reducing your fans efficiency by around 20% so if you have your 365m3/h before or after a bend of 90degrees it instantly reduces the efficiency to around 290m3/h if you have a Carbon filter on this aswell then this will also reduce the efficiency by another 20% so straight away with your filter and a 90degree bend you are in effect using a 230m3/h fan.



J

 

[stephaniesloan]

is it ok to push air through cooltube : NO

can i use one fan to push and one fan to pull : NOT A GOOD IDEA especially as one fan is 365 cmh and the other fan is 137 cmh :
a bit like pushing a skateboard with a truck, or pulling a truck with a skateboard duh !!!

fans perform better when they pull air.



use a normal fan to cause a little air turbulence in your grow space to help cool the hot spots.

 

[jondamon]

is it ok to push air through cooltube : NO.

Actually alot of people Claim that by pushing air through an aircooled reflector increases your fans lifespan as its not having to deal with HIGHLY HEATED AIR.

In a magazine i read called "URBAN GARDEN MAGAZINE" this is how they say you should use aircooled reflectors,

IMO it really doesnt matter i have tried both in my time and either can work as effectively as the other.


F1BUD

I personally use 2 fans. 1x 660m3/h RVK150L1 for my lighting rig which has an independant cold air intake and no grow room air passes through the lighting system and 1x 280m3/h RVK125A1 for scrubbing and exchange.


Here is a pic of my setup




J

 

[f1bud]

is it ok to push air through cooltube : NO

can i use one fan to push and one fan to pull : NOT A GOOD IDEA especially as one fan is 365 cmh and the other fan is 137 cmh :
a bit like pushing a skateboard with a truck, or pulling a truck with a skateboard duh !!!

fans perform better when they pull air.



use a normal fan to cause a little air turbulence in your grow space to help cool the hot spots.

thanx for the advice man, i here wat ur sayin about if i was to do it i need the smaller one push and bigger 1 pull but thgats doable wiv mw set up,, the hydro shop i got the fan from he claimed it was better to push than pull ? he sed if u cud see air u wud see quite clearly that pushing is better, i took the guys advice obviously as i am a nooby, i am about to finish my first grow, and thought i wud pose the question so i dont get a hotspot on my se4cond grow, but its obvious i need more fan power or just use independent fan to deal wiv the cooltube !!, but thanx for ya input man all replies i get i rearly appreciate it. cheers !!!!

ps av to internal oscilating fans in the tent !!

 

[stephaniesloan]

thanx for the advice man, i here wat ur sayin about if i was to do it i need the smaller one push and bigger 1 pull but thgats doable wiv mw set up,, the hydro shop i got the fan from he claimed it was better to push than pull ? he sed if u cud see air u wud see quite clearly that pushing is better, i took the guys advice obviously as i am a nooby, i am about to finish my first grow, and thought i wud pose the question so i dont get a hotspot on my se4cond grow, but its obvious i need more fan power or just use independent fan to deal wiv the cooltube !!, but thanx for ya input man all replies i get i rearly appreciate it. cheers !!!!

ps av to internal oscilating fans in the tent !!

the person in the hydro shop is wrong.

i will give you the facts in laymans terms.

laymans terms : http://en.wikipedia.org/wiki/Layman

it is better to pull air with a fan, the same way as an aeroplane pulls a plane through the air with its propellor, it does not push the plane, that design has been tried tested and failed.
to push a plane you need a jet engine, you can have one or two of them on the tail wings.


it is better to push air with an air compressor which uses a pumping action to produce its air flow rather than a spinning prop.

the cars in the eighties used compressors with pumps to activate the central locking system, you could cut a tennis ball in half put it over the cars door lock and thump the ball hard and the forced air in to the lock used to activate the central locking and open the whole car, you could then remove the locking petrol cap and take it to a ford garage and get them to match a key as you have lost it, after they gave you the key which fitted the locking petrol cap it was the same key that fitted the ignition. clever eh! we did it all the time.
try pushing the air in to the lock with a fan.

the compressor can produce very high forces of pushing air the same way as your lungs, try blowing a candle out from over a foot away , now try sucking it out, that is the facts.

a turbo is very good at pushing and pulling air as it uses a steel or ceramic impeller that forces air from the side to the front or rear, and not a propellor.

the air in a grow room does not get hot enough to damage your fan, just suck the air out with your fan like other growers do the world over.
a decent fan will easily take 50c (122f).

if you need to push it out to keep noise down then so be it.

the only thing i can suggest is pull the air the longest duct, and push it out the shortest duct.

 

[f1bud]

J[/QUOTE]


thanx for ur reply m8, i like the way u do it, ur way is the way to go but wiv fan noise n neighbours well u no wat i mean, as i run a small inline fresh outside air into the tent, i will re think my whole set up for my next grow, u surely look like u av it sussed but like a sed this is my first go so i will re think the whole thing like using the freshair intake to mayb go through the cooltube and out the room, ya no wen i started this venture not for one minuite did i think how much there is to think about, not just tryin to grow ya plant wiv the problems that brings a beginer wiv no help ( except u guys ) but the whole set up design as to be some what right or u run in to problems, am damm suprised i av grew somethink that looks smokable, fingers crossed, but i can see with just google as my confider n urselves it maytake a bit longer than if i some one do this do that n ya will av good weed in x amount of time, but silent pride n all that its the only way to b safe !!!!!! respect for goin out of ya man. much appreciated as ur setup will b wat i ultimatly want. thanx m8

 

[f1bud]

the person in the hydro shop is wrong.

i will give you the facts in laymans terms.

it is better to pull air with a fan, the same way as an aeroplane pulls a plane through the air with its propellor, it does not push the plane, that design has been tried tested and failed.
to push a plane you need a jet engine, you can have two of them on the tail wings.


it is better to push air with an air compressor which uses a pumping action to produce its air flow rather than a spinning prop.

the cars in the eighties used compressors with pumps to activate the central locking system, you could cut a tennis ball in half put it over the cars door lock and thump the ball hard and the forced air in to the lock used to activate the central locking and open the whole car, you could then remove the locking petrol cap and take it to a ford garage and get them to match a key as you have lost it, after they gave you the key which fitted the locking petrol cap it was the same key that fitted the ignition. clever eh! we did it all the time.
try pushing the air in to the lock with a fan.

the compressor can produce very high forces of pushing air the same way as your lungs, try blowing a candle out, now try sucking it out, that is the facts.

a turbo is very good at pushing air as it uses a steel or ceramic impeller and not a propellor.

the air in a grow room does not get hot enough to damage your fan, just suck the air out with your fan like other growers do the world over.

ok man i here u loud and clear there on the whole suck or push thing, lol, well clearly the way i use it at the moment dont work so man i will for sure b pulling it through on my next grow n see if it helps that hotspot?,,,, and yeah that tennis ball cut in half to use to suck the locking mechinisom open is neat man very nice, can i take it that it was for making a few pound when accessing these compressor motors, i.e. nicking the fooker, lol ?

 

[stephaniesloan]

ok man i here u loud and clear there on the whole suck or push thing, lol, well clearly the way i use it at the moment dont work so man i will for sure b pulling it through on my next grow n see if it helps that hotspot?,,,, and yeah that tennis ball cut in half to use to suck the locking mechinisom open is neat man very nice, can i take it that it was for making a few pound when accessing these compressor motors, i.e. nicking the fooker, lol ?

yes we nicked cars, we also used to put metal wire coat hangers in the letter boxes of large car showrooms and hire car companys to pick the keys of the floor after customers had parked their hire car in the car park and put the keys through the letter box, i even remember running up a car transporter truck while the driver was driving one of the cars in to the garage and driving it off and nicking it.

 

[stephaniesloan]

actually alot of people claim that by pushing air through an aircooled reflector increases your fans lifespan as its not having to deal with highly heated air.

In a magazine i read called "urban garden magazine" this is how they say you should use aircooled reflectors,

imo it really doesnt matter i have tried both in my time and either can work as effectively as the other.



F1bud

i personally use 2 fans. 1x 660m3/h rvk150l1 for my lighting rig which has an independant cold air intake and no grow room air passes through the lighting system and 1x 280m3/h rvk125a1 for scrubbing and exchange.


Here is a pic of my setup




j

what!!! No acoustic ducting !!!

 

[jondamon]

what!!! No acoustic ducting !!!

i have acoustic on my lighting system ,



J

 

[f1bud]

yes we nicked cars, we also used to put metal wire coat hangers in the letter boxes of large car showrooms and hire car companys to pick the keys of the floor after customers had parked their hire car in the car park and put the keys through the letter box, i even remember running up a car transporter truck while the driver was driving one of the cars in to the garage and driving it off and nicking it.

good old days eh, lol, dude u shud of bin a stunt man,lol,,,, again thanx for ya input man !!!!!

 

[f1bud]

i have acoustic on my lighting system ,



J

makes sense the acustic box's wen i av my skills honed, meaning wen i no how to grow reliably then i will b investing in some more tech to av the perfect setup that suits me.

 

[jondamon]

makes sense the acustic box's wen i av my skills honed, meaning wen i no how to grow reliably then i will b investing in some more tech to av the perfect setup that suits me.

Thats exactly what i did, cheap magnetic 600, cooltube etc etc honed my skills then invested in my current system, im using everything in my current grow/setup for the first time.



J